Crankshaft grinding machine



FIG. 1 is a front perspective view of a crankshaft grinding machine embodying my new design;

FIG. 2 is a side elevational view thereof as viewed from the right side of FIG. 1;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a side elevational view thereof as viewed from the side opposite that illustrated in FIG. 2;

FIG. 5 is top plan view thereof; and

FIG. 6 is a rear elevational view thereof. 

The ornamental design for a crankshaft grinding machine, substantially as shown. 